<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录页面</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f0f2f5;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }

        form {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            width: 300px;
        }

        h2 {
            text-align: center;
            color: #333;
            margin-bottom: 20px;
        }

        input {
            width: 100%;
            padding: 10px;
            margin: 10px 0;
            border: 1px solid #ddd;
            border-radius: 4px;
            box-sizing: border-box;
        }

        button {
            width: 100%;
            padding: 10px;
            background-color: #4267B2;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 16px;
            margin-top: 10px;
        }

        button:hover {
            background-color: #365899;
        }
    </style>
</head>
<body>
<form>
    <h2>登录</h2>
    <input type="text" placeholder="用户名" required>
    <input type="password" placeholder="密码" required>
    <button type="submit">登录</button>
</form>
</body>
</html>